Results 61 to 70 of about 3,423,233 (292)

The Classifications and Some Correlations for Fermi Blazars

Galaxies, 2016
In a recent paper, we constructed the spectral energy distributions (SEDs) for 1425 Fermi blazars. We classify them as low synchrotron peak sources (LSPs) if log ν p ( Hz ) ≤ 14.0, intermediate synchrotron peak sources (ISPs) if 14.0 <
Junhui Fan, Yi Liu, Jianghe Yang, Chao Lin, Jingmeng Hao, Hubing Xiao   +5 more
doaj   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

Astronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

Dense Ionized Outflow with Five Narrow Components in a Dust-obscured Galaxy

The Astrophysical Journal
We present our discovery of a complex ionized outflow in SDSS J101034.28+372514.7 (J1010+3725), a dust-obscured galaxy (DOG) at z = 0.282. The Sloan Digital Sky Survey optical spectrum of J1010+3725 shows five narrow components with one broad component ...
Taketo Yoshida, Tohru Nagao, Yoshiki Toba, Naomichi Yutani, Thomas Bohn, Kohei Shibata, Nozomu Tamada   +6 more
doaj   +1 more source

The Age of Questions: Truth Regimes and Subjectivity in the Era of Large Language Models

Behavioral Sciences &the Law, EarlyView.
ABSTRACT This essay explores how digital technologies shape subjectivity's infra‐political constitution, focusing on large language models (LLMs) like ChatGPT or Gemini within what philosophers, inspired by Michel Foucault, term the “digital truth regime.” After defining this regime, the essay identifies five key traits of LLMs: presentism in truth ...
Charles Corval
wiley   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

Deep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia, Yunpeng Ji, Zhao Lu, Honghua Zhao, Limin Zhang   +4 more
wiley   +1 more source

Low luminosity elliptical galaxies [PDF]

, 1998
Long-slit spectra for the photometric axes of a sample of 14 elliptical galaxies, predominantly low-luminosity ellipticals, in the Virgo cluster and in nearby groups, are studied to investigate the galaxy kinematical structure and stellar evolutionary ...
Halliday, Claire, Halliday, C.
core  

The Role of AGN in Luminous Infrared Galaxies from the Multiwavelength Perspective

, 2022
Galaxy mergers provide a mechanism for galaxies to effectively funnel gas and materials toward their nuclei and fuel the central starbursts and accretion of supermassive black holes.
Vivian U, U, Vivian
core   +1 more source

Intensive Broadband Reverberation Mapping of Fairall 9 with 1.8 yr of Daily Swift Monitoring

The Astrophysical Journal
We present 1.8 yr of near-daily Swift monitoring of the bright, strongly variable Type 1 active galactic nucleus (AGN) Fairall 9. Totaling 575 successful visits, this is the largest such campaign reported to date.
R. Edelson, B. M. Peterson, J. Gelbord, K. Horne, M. Goad, I. McHardy, S. Vaughan, M. Vestergaard   +7 more
doaj   +1 more source

The incidence of eROSITA X-ray AGN in the local Universe: From dwarf to massive galaxies

Astronomy & Astrophysics
Context. Combining deep, wide-area X-ray surveys with multi-wavelength catalogues provides insights into rare, highly-accreting active galactic nuclei (AGN) and low-mass galaxies at low redshift, the latter potentially representing local analogues of the
Igo Z., Merloni A., Georgakakis A., Buchner J., Arcodia R., Salvato M., Aird J., Nandra K., Trakhtenbrot B., Boorman P. G., Comparat J., Lamer G., Laloux B., Kluge M., Roster W., Bulbul E., Balzer F., Dwelly T., Brandt W. N., Seppi R., Morrison S., Kyritsis E., Gelfand J., Anderson S. F., Schneider D. P.   +24 more
doaj   +1 more source

Gut microbiota dysbiosis‐mediated gut NLRP3 inflammasome activation exacerbates corticospinal tract injury after intracerebral hemorrhage

Interdisciplinary Medicine, EarlyView.
Schematic depicting a gut‐brain pathway that exacerbates CST injury after ICH. Gut Microbiota Dysbiosis‐Mediated Gut NLRP3 Inflammasome Activation Exacerbates Corticospinal Tract Injury After Intracerebral Hemorrhage. Abstract Intracerebral hemorrhage (ICH) causes severe neurological deficits largely attributable to corticospinal tract (CST) injury ...
Meiqin Zeng, Meichang Peng, Chen He, Yanmeng Zhao, Zizhang Cheng, Mengchen Yu, Hao Tian, Lu Zhang, Wen Yuan, Qing Zeng, Jiandong Huang, Haitao Sun   +11 more
wiley   +1 more source